Two-for-one twisting spindle with interior winding-up of the thread



K, www2 ET L 3,4065, TwoFoRoNE TwIsTING SPINDLE wrm INTERIOR wINDING-UP oF THE THREAD Filed July 27, 1967 5 Sheets-Sheet 1 Oct. 22, 1968 K, N|MT2 ET AL Two-FoR-ONE TwIsTING SPINDLE wITH INTERIOR WINDING-UP 0F THE THREAD 5 Sheets-Sheet 2 Filed July 27, 1967 Oct. 22, 1968 K, NlMTz ETAT.

Two-FoR0NE TwIsTING SPINDLE WITH INTERIOR wINDING-UP oF THE THREAD 5 Sheets-Sheet 5 Filed July 27. 1967 United States Patent O 3,406,511 TWO-FOR-ONE TWISTING SPINDLE WITH IN- TERIOR WINDING-UP F THE THREAD Klaus Nimtz, Krefeld, Gustav Franzen, Neerseu, near Krefeld, and Ulrich Lossa, Krefeld, Germany, assigner-s to Palitex Project-Company GmbH, Krefeld, Germany Filed July 27, 1967, Ser. No. 656,404 4 Claims. (Cl. 57-58.65)

ABSTRACT 0F THE DISCLOSURE The present invention relates to a two-for-one twisting spindle with interior winding-up of the thread, in which the spindle rotor has journalled thereon a winding-up bobbin carrier which by magnetic means is secured against rotating together with said spindle rotor, and in which said winding-up bobbin carrier is adapted to support a winding-up bobbin on a displaceable bobbin mandrel and is also adapted to support a slide rail having slidably mounted thereon traversing thread guiding means, said thread guiding means and said bobbin being surrounded by a cylinder rotatable independently of said spindle rotor.

The invention is characterized primarily in that the inner mantle surface of said cylinder has a curved guiding groove extending at the same time around the inner periphery of said cylinder and in the direction of the longitudinal extension of said cylinder over the height of the bobbin to be supported by the bobbin carrier which groove is engaged by and guides the said traversing thread guiding means.

The present invention relates to a two-for-one twisting spindle with interior winding-up of the thread. Two-forone twisting or spinning spindles Work according to the principle that the thread to be twisted or to be spun is on its way from the delivery bobbin to the winding-up bobbin deviated at least twice in an L-shaped direction while the thread moves between two deviating stations about the delivery bobbin or the winding-up bobbin in the form of a balloon.

The two-or-one twisting spindle consists primarily of a driven spindle rotor and a bobbin carrier journalled thereon which bobbin carrier is prevented by magnetic forces from rotating together with the spindle rotor. In this way it will be assured that the thread after leaving the spindle rotor in radial direction or prior to its radially entering said spindle rotor, is adapted in the form of a balloon to freely rotate about the bobbin on said bobbin carrier.

When the bobbin carrier carries a delivery bobbin, the thread withdrawal is as a rule eected in upward direction. The thread is then by means of a thread guiding member above the bobbin deviated downwardly in the direction of the spindle axis, passes through the hollow spindle shank and subsequently moves through the thread storage disc of the spindle rotor radially outwardly. After its exit, the thread moves again upwardly to the windingup bobbin above the spindle. On this path the thread in the form of a balloon )circulates around the delivery bobbin, the balloon tip being determined by a thread guiding member arranged axially above the spindle.

With a two-for-one twisting spindle with interior winding up of the thread, a plurality of threads from delivery bobbins which may be arranged, for instance, on a creel are together moved axially from below through the hollow spindle shank from which the threads already combined to a combined thread move radially outwardly through the thread guide passage of the spindle rotor. Subsequently, the combined thread describes a balloon and moves to an axially upwardly located thread guide which deviates the combined thread in an opposite direction. From the thread guide, the combined thread passes to the thread traversing device arranged adjacent the winding-up bobbin on the winding-up bobbin carrier, by which traversing device the cross-winding of the thread on the winding-up bobbin is efected.

In lconnection with this type of two-for-one twisting spindles to which the present invention relates, it has been suggested to journal the winding-up bobbin parallel to the spindle axis and to provide a traversing thread guide moving parallel thereto upwardly and downwardly for controlling the winding-up of the bobbin over the entire length thereof. This suggestion aims primarily at being able to mount on the winding-up bobbin carrier bobbins with as large a yarn body diameter as possible.

With two-for-one twisting spindles with interior winding-up of the thread there exists the problem of providing a driving device for the traversing thread guide and the winding-up bobbin which driving device will be reliable in Operation while not requiring many parts.

According to another proposition disclosed in assignees copending application Ser. No. 618,612, filed Feb. 27, 1967, now U.S. Patent No. 3,368,336, it has been suggested to upwardly and downwardly displace the traversing thread guide movable on a sliding rail, by means of a magnet. The drive of the winding-up bobbin is eiected, according to the same proposition, by a cylinder extending around the winding-up bobbin and the thread traversing device. The said cylinder is rotatably journalled on the spindle rotor independently thereof and can be driven independently of said spindle rotor to which end the winding-up bobbin frequently engages the inner mantle surface of said cylinder.

It is an object of the present invention to simplify the drive of the traversing thread guide.

It is another object of this invention to provide a twofor-one twisting spindle with interior winding-up of the thread, in which the movement of the traversing thread guide is -derived from the rotary movement of the cylinder surrounding the winding-up bobbin and the traversing thread guide.

These and other objects and advantages of the invention will appear more clearly from the following specilication in connection with the accompanying drawings, in which:

FIGURE 1 is a section through a two-for-one twisting spindle fwith interior winding up of the thread, in which the winding-up bobbin engages the inner -mantle surface of a rotating cylinder which cylinder, for purposes of guiding the traversing thread guide, has a curve-shaped guiding groove on its circumference and is adapted to be driven by a coupling magnetic pole wheel extending around the bottom of said cylinder;

FIGURE 2 illustrates partly in section a perspective view of the two-for-one twisting spindle according to FIG- URE 1:

FIGURE 3 diagrammatically illustrates a top view of the two-for-one twisting spindle according to FIGURE 1 Iwith a device for displacing the winding-up bobbin with the increase of its diameter; and

FIGURE 4 diagrammatically illustrates a top view of the two-for-one twisting spindle according to FIGURE 1 with a modified embodiment of the device for displacing the lwinding-up bobbin when its diameter increases.

The present invention is based on a two-for-one twisting spindle with interior winding-up of the thread, in which the spindle rotor has journalled thereon a winding-up bobbin carrier which is prevented from rotating with said spindle rotor by magnetic forces. The said winding-up bobbin carrier receives a rotatable winding-up bobbin rotatable parallel to the spindle axis and adapited to be displaced together with its bobbin mandrel and also receives a traversing thread guide movable lparallel to said winding-up bobbin on a slide rail. The winding-up bobbin as well as the thread traversing device are together surrounded by a cylinder which is operable independently of the spindle rotor and is journalled below the winding-up bobbin carrier.

The present invention is characterized primarily in that the inner mantle surface of the cylinder has a curved guiding groove extending over the height of the bobbin and at the same time over the circumference of said cylinder while the traversing thread guide which is displaceable on a sliding rail and which is movable upwardly and downwardly engages said groove in said cylinder.

Thus, the rotary movement of the cylinder necessary for driving the winding-up bobbin is by means of the guiding groove engaged by the thread traversing 'guide convented into a movement parallel to the bobbin axis While the length of the stroke corresponds to the height of the bobbin. An expensive transmission for the drive of the traversing thread guide becomes superiluous, and -the thread is automatically during the rotary movement of the winding-up bobbin uniformly `moved upwardly and downwardly.

The cylinder drive necessary for moving the yarn thread guide may be realized in various ways. According to the said copending application, below the winding-up bobbin carrier of the spindle rotor of the two-for-one twisting spindle there is provided a magnetic pole Wheel which at its circumference carries magnetic bodies and which is adapted to be driven independently of said spindle rotor. The drive of the pole wheel is eifected by a magnetic chain movable past said pole wheel or by an electromagnetic rotary eld which is produced by means of its stationarily arranged stator which latter, similar to an asynchronous motor, extends at least partially around the pole wheel.

For purposes of driving the cylinder, the magnetic pole Wheel may form the bottom of the cylinder, and a coupling-magnetic pole wheel which is adapted to be driven independently of :the spindle rotor may extend around the magnetic pole -wheel with radial spacing in the plane of the magnetic body. The said coupling-magnetic pole wheel will when rotating be magnetically coupled to said magnetic pole wheel so as to rotate the same. In this way, it will be realized that due to the magnetic coupling of the coupling-magnetic pole wheel to be driven, both wheels will automatically rotate in a synchronous manner which will be assured by the continuously radially oppositely located magnetic bodies on the magnetic pole wheel and on the coupling-magnetic pole wheel. Both Iwheels are magnetically coupled to each other but therebetween dene an annular gap which affords the possibility that the thread circulating as a balloon can move freely between the -magnetic bodies.

According to a further development of the present invention, the coupling-magnetic pole wheel may be designed as wheel hub with radially directed arms the free ends of which extending into the plane of the magnetic body of the magnetic pole wheel have arranged thereon the said magnetic bodies.

The drive for the coupling-magnetic pole wheel may be of any desired type. Thus, for instance, the drive may be eifected through gears, friction wheels and also by means of a belt drive. In the last-mentioned instance, according to the present invention, the coupling-magnetic pole wheel may have its wheel hub, the outside of which is designed in form of a pulley, jo-urnalled on a bearing hub which extends around the spindle rotor with radial play and is arranged stationarily.

Referring now to the drawings in detail, the two-forone twisting spindle according to FIG. 1 comprises a spindle rotor 1 the whorl of which is engaged by the tangential belt 3. Placed upon the extension stud 4 is a thread storage disc 5 with the overlow dish 6, which disc is frictionally connected to stud 4. A disc-shaped winding-up bobbin carrier 9 extends around a further extension stud 7 while being freely rotatable by means of a bearing 8. The bobbincarrier 9 has an eccentrically arranged stud 10 shown in detail in FIG. 3 around which Ithe lever arm 11 is pivotable. The free end of arm 11 carries the bobbin mandrel 12 on which placed the 'winding-up bobbin 13. A spring 14 continuously urges the outer mantle surface of the bobbin 13 into engagement with the inner mantle surface 15 of cylinder 16 While providing frictional interengagement therebetween.

Mounted on the outer marginal portion of the windingup bobbin carrier 9 is a slide rail 17 which extends parallel to the axis of the bobbin mandrel 12. Displaceable upwardly and downwardly on the rail 17 is a slide 18 which carries the traversing thread guide 19 with the thread guiding slot 20.

The slide 13 with a sliding pin 21 is provided for the upward and downward movement of the traversing thread guide 19 for obtaining the crosswinding on the windingup bobbin 13.l The sliding pin 21 engages a guiding groove 22 in the inner mantle surface 15 of the cylinder 16. The guiding groove 22 extends in the form of a curve over the height of the bobbin and simultaneously over the circumference of the cylinder 16 so that a rotation of the cylinder 16 will cause the slide 18- to move upwardly and downwardly on the sliding rail 17. In this connection the sliding pin 21 will move in the guiding groove 22 between the upper deviating point 23 of the latter shown in FIG. 2 and the lower deviating point located on the oppositely located side in cylinder 16. Instead of a sliding pin 21, also a sliding roller or a pivotable sliding shoe may be provided.

The drive of the cylinder 16 for carrying out a circular movement around the winding-up bobbin 13 and the traversing thread guide 19 is effected through the intervention of a magnetic coupling between the magnetic pole wheel 24 and the coupling-magnetic pole wheel 25. Magnetic pole wheel 24 is by meansof the antifriction bearing 26 freely rotatably journalled on hub 9 of the winding-up bobbin carrier 9. The magnetic pole wheel 24 simultaneously forms the bottom ofthe cylinder 16 so that the cylinder 16 will be carried along when the magnetic pole 'wheel 24 rotates. The outer marginal portion of the magnetic pole wheel 24 is provided with magnetic bodies or magnetic shoes 24a. Radially outwardly of the plane of the magnetic bodies 24a there are provided magnetic bodies 27 of the coupling-magnetic pole wheel 25 the bearing hub 28 of which forms a pulley. The bearing hub 2S is by means of an antifriction bearing 29 journalled on the bearing hub 30 which surrounds the whorl 2 with play and through the intervention of the supporting arm 31 may be stationarily connected to the machine frame. The bearing hub 28 is engaged by a V-belt 32 driving the coupling-magnetic pole wheel 25. Together with said wheel 25, due to the magnetic coupling between the magnetic bodies 27 and 24a, also the magnetic pole wheel 24 rotates and thus also the cylinder 16 so that the cylinder 16 frictionally also drives the winding-up bobbin 13 and that the traversing thread guide 19 due to the sliding pin 21 guided in the guiding groove 22 carries out its upward and downward movement.

The thread which leaves the spindle rotor 1 in axial direction below the bobbin carrier 9 and subsequently rotates around the cylinder 16 in the form of a balloon is by means of the thread guiding tube 33 deviated downwardly and subsequently passes through the thread guiding ear 34 and by means of the guiding roller 35 connected to the traversing thread guide 19 is deviated by 90 toward the thread guiding slot 20 of said guide 19. As will be seen from the drawing, the thread guiding tube 33 is supported by a pivotable arm 32 which is pivotably connected to the upper end of the slide rail 17.

inasmuch as the winding-up bobbin carrier 9 eccentrically supporting the winding-up bobbin 13 through the lever arm 11, and the slide rail 17 together with the traversing thread guide 19 must not take part in the rotary movement of the cylinder 16, a magnet 36 is arranged on the winding-up bobbin carrier 9 at the level of the slide rail 17 while opposite to said magnet 36 radially outwardly of the stationarily arranged balloon restrainer 37 there is provided a counter-magnet 38. By means of these magnets, the winding-up bobbin carrier 9 is prevented from rotating together with the cylinder 16 or the spindle rotor 1 and thus stands still. The arrangement of the magnets is clearly shown in FIGS. 1, 2 and particularly in FIGS. 3 and 4.

A- further advantage of this drive for the cylinder 16 consists in the fact that the drive is completely independent of the drive for the spindle rotor 1 so that the winding-up operation can `be adjusted in conformity with the respective yarn conditions and the desired winding.

The coupling-magnetic pole wheel 25 may consist of a disc-shaped wheel. However, if desired, the coupling-magnetic pole wheel 25 may be in the form of a hub 28 forming a pulley which is provided with radially directed arms 39 (.with six arms according to the embodiment of FIG. 2) the free ends of which have mounted thereon the magnetic bodies 27. In view of the magnetic coupling of the magnetic bodies 27 with the magnetic pole wheel 24, the latter will rotate synchronously with the coupling-magnetic pole wheel 25.

FIG. 4 shows a further embodiment of the supporting device for winding-up bobbin 13. Whereas the bobbin mandrel 12 for the winding-up bobbin 13 according to FIG. 3 is by means of the lever arm 11 pivotable about the pivot eccentrically located with regard to the spindle axis and is carried by the bobbin carrier 9, according to FIG. 4, the winding-up bobbin 13 is with its bobbin mandrel 12 freely rotatable and is carried `by the yoke 40 movable transverse to the spindle axis. The yoke 40 is displaceably supported by the two parallel guiding rails 41 and 42. The guiding rails 41 and 42 are connected to the winding-up bobbin carrier 9. The yoke 40 and thus also the winding-up bobbin 13 are displaceable along the guiding rails 41 and 42 against the thrust of the springs 43 and 44, said springs being wound around the guiding rails 41 and 42. The springs 43, 44 press the winding-up bobbin 13 through the yoke 40 against the cylinder 16 so that, regardless of the diameter of the winding-up bobbin 13, the said winding-up bobbin 13 will by means of its mantle surface frictionally engage the inner mantle surface of the cylinder 16. The traversing thread guide 19 will independently of the diameter of the winding-up bobbin 13 continuously, under slight spring pressure, which is adjustable through an annular spring in the joint 45 of the traversing thread guide 19, slightly engage the mantle surface of the winding-up bobbin 13. In this way a precise crosswinding on the winding-up bobbin 1'3 will be assured.

It is, of course, to be understood that the present invention is, by no means, limited to the particular ernbodiments shown in the drawings but also comprises any modifications within the scope of the appended claims.

What we claim is:

1. A two-for-one twisting spindle with interior winding-up of the thread, which includes: rotatable spindle rotor means, bobbin car-rier means journalled on said spindle rotor means for supporting a winding-up bobbin, means for holding said bobbin carrier means stationary relative to Said spindle rotor means when the latter is rotating, substantially vertically extending -rail means supported by said bobbin carrier means, traversing thread guiding means slidably mounted on said rail means and movable up and down the same for producing a cross winding on a bobbin on said bobbin carrier means, an upright cylinder with its longitudinal axis substantially parallel to the axis of rotation of said spindle rotor means, said cylinder surrounding said rail means and said thread guiding means and also surrounding the space normally occupied by a bobbin on said bobbin carrier means, said cylinder being rotatably journalled below said bobbin carrier means, the interior mantle surface of said cylinder being provided with a curved groove extending around the inner periphery of said cylinder and at the same time also in the direction of the longitudinal extension of said cylinder over the height of a bobbin to be supported by said bobbin carrier means, driving means independent of said spindle rotor means and drivingly connected to said cylinder for rotating the same, means urging said bobbin carrier means toward the inner wall of said cylinder so as to cause frictional engagement of a bobbin carried by said bobbin carrier means with said cylinder, and means connected to said traversing thread guiding means and guided in said groove.

2. A spindle according to claim 1, in which said driving means includes magnetic pole wheel means with magnetic means at the outer peripheral area thereof, said wheel means being connected to and forming the bottom of said cylinder, rotatable coupling magnetic pole wheel means substantially coaxially arranged with regard to said irst mentioned magnetic pole wheel means in radially spaced relationship to the latter so as to be magnetically coupled thereto for rotating the said rst mentioned pole wheel means and thereby said cylinder in response to a rotation of said coupling magnetic pole wheel means, and driving means independent of said spindle rotor means for` rotating said coupling magnetic pole Wheel means.

3. A spindle according to claim 2, in which said coupling magnetic pole wheel means has a hub portion with radially outwardly extending arms, and magnetic body means respectively supported by the outer ends of said arms.

4. A spindle according to claim 3, in which said hub portion includes a pulley, and bearing means surrounding said spindle rotor means in radially spaced relationship thereto and rotatably supporting said hub portion.

References Cited UNITED STATES PATENTS 3,060,670 10/1962 Starnes 57-58.83 3,066,472 12/1962 Klein 57-58.65 XR 3,172,247 3/1965 Chapuis et al. 57-58.65 XR 3,368,336 2/1968 Franzen 5758.67

JOHN PETRAKES, Primary Examiner. 

